Sliding-door lock



F. ANDRUSYSZYN.

SLIDING DOOR LOCK.

APPLICATION FILED DEC. 1, I921.

1,ms,509. Patented y25, 1922.

' Him-l v r w 1 a hlat FRANK ANDRTJ'SYSZYN, OF REVLOC, PENNSYLVANIA, ASSIGNOR OF ONE-FOURTH 'IO WASYL KLYMKO, OF NANIY GLO, PENNSYLVANIA, AND GNE-FOURTH T0 ANNA SENCZAK, OF REVLOC, PENNSYLVANIA.

SLIDING-DOOR LOCK.

eas es.

Application filed December 1, 1921.

T 0 aZZ whom it may concern Be it known that I, F RANK ANnnnsYszYN, a citizen of Ukraine, residing at Revloc, in the county of Cambria and State of Pennsylvania, have invented certain new and useful Improvements in Sliding-Door Locks, of which the following is aspecification.

This invention relates to certain new and useful improvements in sliding door locks particularly adapted for use upon sliding doors of freight cars.

The primary object of the invention is to provide an extremely efficient means for locking sliding doors in closed position embodying simplicity and durability.

Another object of the invention is to provide a lock for sliding doors wherein move ment of the door to a still further extent in the direction of closing is required for entire release of the door after the main locking member has been released, the same thus providing a lock which will be extremely hard for an unauthorized person to open.

With the above general objects in view and others that will appear as the nature of the invention is better understood, the invention consists in the novel form, combination and arrangement of parts hereinafter more fully described in connection with the accompanying drawing, and in which like characters of reference indicate similar parts throughout the views.

In the drawing,

Figure l is a fragmentary front elevational view showing the exterior of, a car equipped with a lock constructed in accordance with the present invention,

Figure 2 is a horizontal. sectional view taken substantially upon line II-II of Figure 1, v

Figure 3 is a fragmentary vertical sectional view taken substantially upon line III-III of Figure 2,.

Figure 4c is a vertical transverse section taken substantially upon line IV-IV of Figure 1, and

Figure 5 is a fragmentary horizontal sectional view taken substantially upon line V-V of Figure 1. t

In the drawings, the present invention is shown applied to a railway car, a portion Specification of Letters Patent.

Patented July 25, 1922.

Serial No. 519,17

of one side wall of which is indicated by the reference numeral 5, said wall being provided with a doorway adapted to be closed by the usual form of sliding door 6. The sliding doors of this type are usually arranged inwardly of the walls of the freight car so as to slide along the inner face of said wall and the present invention aims to provide efficient means for locking such sliding doors in closed position as'shown in Figures 1 and 2.

The present lock embodies a hollow panshaped casing 7 open at one side and with the walls of the same flanged at its side as at 8 whereby the casing may be rigidly fastened to the wall 5 so that the latter will close the open side of said casing with the latter rigidly held in position by means of screws 9 or the like passing through said flange and into the wall 5. A slidable looking plate 10 is mounted in a horizontal position within the casing 7 for longitudinal sliding movement along the inner face of the wall'o, and this locking plate is preferably guided by overhanging guide lugs 11 suitably fixed to the wall 5 and a guide 12 carried. by the casing 7. The guide 12 is preferably in the nature of a transverse partition rigid with the casing 7 near the outer end thereof and having a slot through which the locking plate 10 extends, the wall of this slot being shaped to snugly fit the plate 10 in cross section and the latter having its longitudinal corner portions beveled or chamfered as shown clearly in Figure 4. The locking plate 10 is normally moved and held toward the outer end of the casing 9 by means of a leaf spring 13 having one end attached as at 14 to the inner end of the easing 7 and its other end attached as at 15 to the locking plate 10, the spring 13 being arranged within the casing 'Z' and positioned longitudinally of the latter as well as extending through an opening provided in another transverse partition 16 of the easing'7.

Another sheet metal spring 17 is disposed within the casing 7 between the side wall of the latter and the locking plate 10 and this spring is of substantially U-shape with its ends attached to the casing and the looking plate so that said spring urges the locking plate into intimate contact with the wall 5 and assists the spring 13 in yieldingly urging the locking plate toward the outer end oi the casing 7,

The wall 5 is provided with an opening 18 and the locking plate 10 is provided with a similar opening 19, which openings are adapted to accmrately register when theloclo ing plate retracted. against the action of the spring 1?, :ior permitting the unobstructed entrance ot the locking bolt 20 into the same, said locking bolt being rigidly formed or provided on the inner edge of a horizontal swinging handle 21 which is pivoted upon a vertical axis as at 22 between a pair of ears 23 having a flanged base attached by means of screws or the like as at 2% to the door 6. The bolt 20 has an enlarged head providing inner and outer shoulders respectively adapted to engage behind the inner face of the locking plate 10 and the wall 5 at the inner wall of the opening 19 and at the outer wall of the opening 18 as shown in Figure 5 when the locking plate 10 is in its outward position and when so disposed, the bolt 20 is effectively held as shown in Figure so that the handle or swinging member 29 cannot be swung outwardly and whcreoy the door (3 is el'ltectively held in closed position.

The upper longitudinal edge ol the lookin plate 10 is provided with a rack 25 prel erably made by the tormation of teeth in this edge oi the locking plate, and a spur gear 26 meshes with this rack and is fixed upon a horizontal shaft 27 which has one end journaled as at 28 in the side wall of the casing 'i' and which has its other end journaled in a suitable bushing 29 which is fixed in an opening provided through the wall 5, an annular shoulder 30 being tormed upon the inner end of the shaft 27 to prevent endwise movement of the latter. It will thus be seen that by rotation of the gear 26, the locking plate ll) may be retracted tor disengaging the latter from the inner shoulder on the head ot the bolt 20 whereupon further movement of the door 6 to closing position will disengage the other shoulder of said bolt from the wall 5 so that the handle 21 and its bolt 20 may be swung outwardly entirely through the openings 18 and 19 at which. time the door (3 will be unlocked. It is noted that the combined handle and locking bolt member maybe utilized 1 01. sliding the door to open position and when the head of the bolt 20 is "free to move through both of the openings 18 and 19, the same is projected outwardly through said openings by means of a leaf spring 31 hearing upon the inner end of the bolt 20 at its free end and tired at its other end to the side wall of the casing 7 as shown. clearly in Figure 5.

In order that the shaft 27 may not be opcrated except by an authorized person, the same terminates flush with the outer end of the bushing 29 and is provided with a longitudinal socket at its end as at 32 shaped to accommodate a key 33 ot a predetermined particular form so that turning of the key will effect rotation of the shaft and through the gearin described release of the locking plate 10 will be had.

In operation, with the parts in the position shown in the drawings, it it is desired to unlock the door 6, the key will be rotated ttor retracting the locking plate 10 against the action or the springs and 17 until said locking plate is entirely disengaged from the head of the bolt 20 where upon the door 6 will be moved slightly in the direction that it is moved for closing so as to also disengage the head of said bolt from the wall l 'i hen this is done, the spring 31 immediately forces the bolt 20 outwardly through the openings 19 and 18 which is permitted by reason or the fact that this belt is 0: fried by the hinged member 21, and then s2 d door 6 may be freely slid to openposition with the member 21 employed as a handle for this purpose.

A reverse or? this operation will effect a locking oil; the door as will be readily understood and it is believed that the construction and operation as well as the ad 'antages ot the present invention will be readily appreciated by those skilled in the art from the :t'oregoing le :'-:cri1 )tion,

Minor changes may be made without departing from the spirit and scope of the invention as claimed.

l i hat is claimed as new is:

1. In combination with a sliding door having a bolt carrying member hinged thereto tor inward and outward swinging movement, the bolt oi said l'nlember having an enlarged head providing oppositely extending shoulders, a, structure having a doorway adapted to be closed by said door and provided with an opening into which said bolt is adapted to extend when swung inwardly, a sliding locking plate having an opening adapti-id to be registered with the o iiening oil said structure for admitting said bolt, one ol" said shoulders adaptml to engage behind the structure and behind the locking plate when the door is closed and slightly inoved inv the direction of its opening n'ioveme'ut and when the locking plate is moved to bring its opening out of alinemeut with the opening in the structure, and means to move said locking plate to alino its opening with the opening in said structure. a

2. In combination with a sliding door having a transversely swinging bolt connected thereto provided with oppositely extending shoulders, a sliding locking plate adapted to engage one of said shoulders, a member stationary with. respect to said door and adapted to engage the other of said shoulders, said tion of its closing movement, and means to move said locking plate to disengage the same from the first named shoulder of said bolt.

3. In combination with a sliding door having a transversely swinging bolt connected thereto provided with oppositely extending shoulders, a sliding locking plate adapted to engage one of said shoulders, a member stationary with respect to said door and adapted to engage the other of said shoulders, said last named shoulder being engageable with said stationary member when the door is closed and releasable therefrom upon slight further movement of the door in the direction of its closing movement, means to move said looking plate to disengage the same from the first named shoulder of said bolt, said locking plate and said stationary member having openings adapted to be alined by adjustment of the locking plate for admitting said bolt, and means to yieldingly urge the bolt outwardly through said openings upon alinement of said openings and such further movement of the door in the direction of its closing movement.

i. In combination with a sliding door having a transversely swinging bolt connected thereto provided with oppositely extending shoulders, a sliding locking plate adapted to engage one of said shoulders, a member stationary with respect to said door and adapted to engage the other of said shoulders, said last named shoulder being engageable with said stationary member when the door is closed and releasable therefrom upon slight further movement of the door in the direction of its closing movement, means to move said locking plate to disengage the same from the first named shoulder of said bolt,

said locking plate and said stationary mem her having openings adapted to be alined by adjustment of the locking plate for admitting said bolt, means to yieldingly urge the bolt outwardly through said openings upon alinement of said openings and such further movement of the door in the direction of its closing movement, and means to yieldingly urge the locking plate to a position wherein said openings are out of alinement.

5. In combination with a sliding door having a transversely swinging bolt connected thereto provided with oppositely extending shoulders, a sliding locking plate adapted to engage one of said shoulders, a member stationary with respect to said door and adapted to engage the other of said shoulders, said last named shoulder being engageable with said stationary member when the door is closed and releasable therefrom upon slight further movement of the door in the direc tion of its closing movement, means to move said locking plate to disengage the same from the first named shoulder of said bolt, said locking plate and said stationary member having openings adapted to be alined by adjustment of the locking plate for admitting said bolt, means to yieldingly urge the bolt outwardly through said openings upon alinement of said openings and such further movement of the door in the direction of its closing movement, means to yieldingly urge the locking plate to a position wherein said openings are out of alinement, a casing in which said locking plate is slidably mounted, a transverse shaft journaled in said casing and having an axial socket entering from the outer end thereof adapted to admit a key for turning said shaft, and means operatively gearing said shaft to said locking plate for causing longitudinal sliding movement of the latter.

In testimony whereof I aflix my signature.

FRANK ANDRUS YSZYN. 

